cardiac muscle - heart muscle, under involuntary control, composed of striated cells that attach to form fibres, each cell contains a single nucleus, contracts autonomously

myocyte - muscle cells

skeletal muscle - usually attached to bone, under voluntary control, each cell is a fibre that is multinucleated and striated

smooth muscle - under involuntary control, moves internal organs, cells contain a single nucleus, are spindle-shaped, and do not appear striated; each cell is a fibre

striation - alignment of parallel actin and myosin filaments which form a banded pattern